Another alternative is to do double laps. The nice thing about this is it gives you a longer break. With a five-person team, you really don't have that much time between laps because you have to get back to the campsite, eat, clean up, and then get ready to go again.

Most races allow you to rotate teammates any way you want as long as each racer does at least one lap.

For food, I brought a bunch of different pre-made deli salads from Mollie Stones. I have a wheat allergy (among other things), so sandwichs aren't really an alternative. I had some yummy orzo & feta salad, turkey salad, spinach salad, etc. I also brough hummus and corn chips. And V-8 is great! I was able to get a good mix of carb, protein, and fat and didn't need to cook. I also ate a lot of fruit. I made sure to eat as soon as I finished my lap so I could recover and digest